Sliding extension leaf for tables and cabinets



De. 25, 1951 T. H,'| |NDE| 0F 2,580,032

SLIDING EXTENSION LEAF FOR TABLES AND CABINETS Filed NOV. 17, 1949 2 SHEETS- SHEET 1 De 25, 1951 T. H. LINDELOF 2,580,032

SEEDING EXTENSION LEAF FOR TABLES AND cABINETs Filed Nov. 1v, 1949 2 SHEETS-SHEET z y Patented Dec. 25,1951

oFFlcE SLIDING EXTENSION LEAF FOR TABLES AND CABINETS Tore H. Lindelf, Stockholm, Sweden Application November 17, 1949, Serial No. 127,883 In Sweden November 17, 1948 4 claims. (c1. S11-16.5)

The present invention relates to an arrangement in slides in tables,V cabinets and the like, where the slide in its inactive position is inserted in a partition.

The invention has for its object to obtain a slide arranged to be operated in such a manner that in its withdrawn position it is swingable in the horizontal plane into diierent angular positions relatively to the partition, i. e. the table, cabinet or the like so that a more convenient working place is obtained-at said slide.

Other objects of the invention will appear from the description with reference to the accompanying drawings.

Figure 1 shows, inplan scale, a table provided with-a slide arranged according to the invention, which slide is in a swingout position. Y

Figure 2 is a front view, on the same scale, of

the table, the slide being in inserted position.

Figure 3 is a side view, on an enlarged. scale, of a swingable bracket arrangement. f

Figure 4 shows on a reduced scale, the slide as viewed from below,fthe bracket arrangement being in the withdrawn position of the slide.

Figures 5 and 6 show, in the samemanner as in Figure 4, the slide togetherV with the bracket arrangement in two diierent positions during the insertion of the slide into its partition.

Figure '7 shows in real size an axial section through the bearing arrangement.

Figure 8 shows in cross section along the line 8-8 of Figure '7 a locking device combined with the bearing arrangement.

A piece of furniture, shown as a table or a cabinet I having a leg frame or walls 2, comprises a partition, below the top of the table, for a slide 3, which may be carried out in any desired manner or may consist of a frame. The slide 3 `is guided in the partition in the conventional manner by means of ledges or the like. from Figure 2, below the slide there are shown ledges 4, which are adaptable for guiding drawers, for example. Figure 1 shows the slide 3 in a swung-out position, which lies at an angle of nearly 180 to the position of the slide inserted in the partition. In the swung-out position the slide 3 is carried by a bracket 5 swingable about a vertical pin 6 provided near the fore edge of the partition. The bracket is provided with a sleeve shaped bearing member 1, which encloses the pin 6 and which may form part of one leg of the piece of furniture or part of the fore border of the piece of furniture, the outer surface of the sleeve 'I conforming, if desired, with the shape of view and on a reduced f As appears 2 the leg or of said border. In the inserted position the slide is guided in the partition and released from the bracket. On the other hand, .in the swung-out position the slide is connected with the bracket. According to the example shown, the bracket is in `the form of a substantially triangular plate, one corner portion 8 of which in the swung-out position of the slide is introduced into a dark-slide like member 9 rigidly secured to the slide 3. As further appears from Figures 3 and 4, the dark-slide like member contains a marginal ledge I0, II bent to form a V, one branch I0 of which in the entirely drawn-out position of the slide bears against the triangular bracket 5 along one side thereof, whereas the other branch II is located adjacent a portion of another side I 2 of the bracket 5. The bracket 5 is substantially in the form of a right-angled triangle so that the edge I2 extends along the hypotenuse of the triangle, whereas the edge I3 located adjacent the marginal edge II) forms one of the small sides of the triangle. A prolongation of the ledge II is designatedby I4. rIhe ledges I0 and II are in,- terconnected by means of a plate member I5, which together with the marginal ledges I0, II and the slide 3 forms a pocket intended toreceive the corner portion 8 of the bracket. As stated above this takes place in the entirely drawn-out position of the slide, and hence said pocket'is provided near the rear edge I5 of the slide 3. On the under side of the slide 3 at the fore edge there is a butt ledge I1 extending over the entire width of the slide. f

Figures v5 and 6 show two diierent positions of the slide in thev partition. According to Figure 5, the slide 3 is inserted half-way from the position shown in Figure el.v During this movement, the marginal ledge II has actuated the bracket 5 so that this latter is angularly displaced. The edge I2 of the bracket is nearly par'- allel to the longitudinal edges of the slide. The outer portion of the ledge II thus operates as a cam member. Hereafter, the slide 3 may be inserted a further distance, ere the bracket engages the butt ledge I1 on the slide and is angularly adjusted while moving through the position shown in Figure 6. In the entirely inserted position of the slide 3, the outer edge of the bracket is parallel to the butt ledge Il, while the edge I3 is nearly parallel to the longitudinal edge of the slide.

When the slide 3 is drawn out of the partition, the edge I2 of the bracket moves into engagement with the outer end portion of the ledge I4 and is angularly adjusted so that the edge I2 0f the bracket will be nearly parallel to the longitudinal direction of the slide. In the last-mentioned position the corner 8 impinges the ledge I0. When the slide 3 is further withdrawn, the corner 8 slides along the ledge l0, until nally the bracket and the pocket assume the position shown in Figure 4. During this movement, the ledge l operates as a guide bar. i

In the nal coupling position between the bracket 5 and the pocket 9, a bent end portion I8 of the ledge I0 passes into engagement with a recess I9 in the bracket so that the slide. 3 is fixed laterally in relation to the bracket. At the same time a short pin 29 on the'bracket engages a slit shaped recess 2| at. the. edge, of the. plate member l5. Said recess is so directed relatively to the pin 6 that the slide is locked in position relatively to the bracket so that the slide upon being rapidly swung out is preventedfrom being disengaged from the bracket. Y

In Figure 3 the bracket is seen in the direction towards the fore edge of the slide. On the Side of the sleeve i facing said slide there is provided a locking member 22 pivotally mounted by means of apeg, said locking member being inserted in a slide shaped recess 23. As shown more distinctly in Figure '7, said locking member is actuated by a spring 24 which tends to hold the locking member in inserted, i. e. inactive position in which said member is located inside the contour of the sleeve 1. Adjacent the locking member 22, th'e pin 6 is bevelled and is here limited by a plane surface 25 which surface allows the locking member 22 to assume the inactive position shown, when the slide islin the withdrawn position in the partition. However, as soon as the slide is swung, the bearing sleeve 1 turns about the pin 6 and the locking member 22 engages the cylindrical surface of the pin G, whereby the locking member is moved outwards into engage.- ment with a recess 26 inthe longitudinal edge of the slide. In this way, the slide is locked against movement in its longitudinal direction and is retained, during the movement of oscillation, in the position in which it is coupled to the. pocket 9,

When the slide has been returned to the angular position determined for insertion into the partition, the locking member 22 has been returned by the spring 24 into its inactive position and has moved out of engagement with the slide.

Of course, the locking member is moved` outwards from the inactive position when the slide is inserted into the partition but during this movement the bearing sleeve 1 turns in relation to the slide so that the. locking member is moved away from the slide.

Figure 8 shows the placement of thebearing sleeve 'l on the pin 6, the lower part. of which is rigidly secured to the lower part of the thrust ball bearing 21 placed inside the piece. of furni- 4 ture. The sleeve rests on said upper part 28 of said bearing and above it is centred by means of a ball bearing 29 provided in the upper end of the sleeve. The upper end of the pin 6 is rigidly secured to a plane fitting 30 screwed on to that upper portion of the piece of furniture which is located below the top of the table.

Iv claim:

1.. In combination withia table, cabinet or the like having a partition therein, a slide adapted to be slid into and out of the partition, guide means in the partition to guide said slide for horizontal movement into and out of the partition, cam members on the lower side of said .slide,`a vertical pivot near the outer edge of one side wall of said partition, a bracket journalled on said pivot and including a horizontal carrying surface adjacent to the lower side of said slide when located in the partition, said bracket including means engaging said cam members when the slide is drawn outwards from the partition thereby to cause the bracket to swing on the pivot, and connecting members on the slide and the bracket constructed and positioned to engage. each other when the slide is drawn out of the partition and out of engagement withv the guide means in the partition.

2. The combination claimed in claim 1, wherein the outer edge of the slide is provided with a butt member adapted to engage the bracketand swing it back into the position in the partition when the slide is slid into the partition.

3. The combination claimed in claim 1, wherein the cam members and the connecting means onthe. slide are integralwith each other'to form a unit mountable onv the lower side of the slide.

4. The combination claimed in claim 1, wherein the bracket is rigidly connected with a sleeve mounted onr said. pivot, said sleeve having a recess therein, a locking member normally held by spring pressureV in an inactive position within the outer contour of ythe sleeve, a cam surface on said pivot 6 positioned to urge the locking member outwards beyondsaid contour when the slide is angularly displaced. in relation to the partition, and a recess in the slide positioned to receive the locking member` when so displaced.

r'rokRE' HJ. LrNDELF.

REFERENCES vcrrim The. following references are of record inthe file of this` patent.:

UNTTED STATES PATENTS 

